47040912 has 140 divisors (see below), whose sum is σ = 141630940. Its totient is φ = 15116544.

The previous prime is 47040907. The next prime is 47040947. The reversal of 47040912 is 21904074.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37896336 + 9144576 = 6156^2 + 3024^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 431514 + ... + 431622.

Almost surely, 2^47040912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47040912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70815470).

47040912 is an abundant number, since it is smaller than the sum of its proper divisors (94590028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47040912 is a wasteful number, since it uses less digits than its factorization.

47040912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 47040912 is about 6858.6377656208. The cubic root of 47040912 is about 360.9872899099.

Adding to 47040912 its reverse (21904074), we get a palindrome (68944986).

The spelling of 47040912 in words is "forty-seven million, forty thousand, nine hundred twelve".